Type-writer carriage construction.



l ETENTED JUNE 7, 1004.

J. ALEXANDER. TTPE WETTEN CARRIAGE. CONSTRUCTION.

C APPLICATION FILED 11110.20, 1002. `EENEWED DEC. 17. 1003. No M0DEL.`

` ATTORNEY UNITED STATES Patented June 7,. 1904.

y PATENT OFFICE.

'Nin-v YORK, AssieNoE on ONE-HALE -ORONSON, AND ,SOLOMON il. SIEGEL,

ATYPr--WRITER CARRIAGE o'oNsTRuo-rlou.

SPECIFICATION forming part of Letter-i Patent No. 761,639, dated June 7, 1904. Application filed December 29,1902. Renewed December 1'7, 1903. Serial No. 185,593.' (No model.)

To al?, whom t may concern.-

Bc it known that 1,..lnssn ALEXANDER, a citizen of the United States, residing at Brooklyn, Kings county, NewYork, have invented 5 certain new and useful vImprovements in TypelVriter OarriageUonstruction, of which the follewingis afull, clear, and exact description.

My invention relates to improvements in type-writers, and particularly to the carriage 1o construction thereof.

The object of my invention is to improve the construction of that part otl a type-writer which is designed to carry the platen and iorm it in s ueh a manner that while it is rigid i 5 and reliable it may be readily removed from the other vparts of the machine for'the purpose of repair or adjustment. .in many kinds of `typewriter construction that the type-writer may be able Vto do work on different sizes of papers, sometimes of width greater than the capacity ot' the ordinary carriage. For this purpose it is necessary either to have another machine which will take the required width of the paper or to remove the ordinary carriage and platen and substitute one of the proper width or capacity. In doingl this it is ofcourse advisable that as little mechanical ingenuity as possible be required ofthe operator andthat the mechanism be not disarranged.

Theinvention consists in mounting the carriage in such' manner that the entire structure may be quickly and readily removed from the main body of the machine. While attached thereto it has the greatest rigidity possible.

Figure 1 is a plan View ot" those parts ot' a typewriter embodying the improvements oi my invention. Fig. 2 is a front elevation of the same, part being broken away. Fig. 8 is an end elevation of the same, part being broken away. Fig. 4. is a cross-section and elevation of the improved construction by means o't' which the carriage is secured tothe machine.

1 is a fragment of the main body of the machine. 2 is a supporting-plate carried vthereby and extending across from side to side of themachine. In this supporting-plate 1t is desirable .i g1 1s pivoted the escapement-shait and piniont for engaging rack 4..

main guide-rod 6 for the carriage. The connectingplate has at `the two ends the brackets 7 7, which secure the main guide-rod 6. rlhe br.'.ckets maybe secured to the connectingplate 5 by means of screws 8. (Shown dotted 5 5 in Figs. 2 and 3.) The central portion ot the connecting-plate is reccssedor cut away to make allowance for the escapement mechanism.

On the guide-rod 6slides the sleeve 9, which 6o is secured to the bar 10. This bar 10 connects the side frames 11 and 12 of the carriage struetu re. To these side frames are pivoted theside plates 13 and 14., which provide bearings for the platen-shaft. (SeeFig. The weightoi the 65 carriage and attached parts is borne at the rear by the guide-rod 6 and at the front by the track 16, which is.v secured to the frames of the machine. 5

17 and 18 are guide-rollers carried by the 7o bar 19, which connects the two sideft'rames 11 and l2.

2O is an auxiliary guide-rail by means of which the platen is shifted through the mewhich is mounted in the side plates 13 and 14.

The rack 4, which engages with the escapement-wheel 3, connected, by means of the arms 23 and 24,1*to the shaft 25, pivoted in the side frames 'l1 and 12. 26 is a handle by 8o 'means of which this shaft 25 may be rotated,

so as to withdraw the rack 4; 'from engagement with the escapement-wheel Since the other parts of thc-.escapement are `not con-v cerned with this invention, it is `unnecessary 85 to describe them here.

The construction by'mca'ns of which the connecting-plate 5 is secured to the supportingplate 2 ot 'the machine is shown in detail in Fig. 4C. 26' is a bushing carried by the sup- 90 porting-plate 2, which projects upward and tits into a recess in the connecting-plate 5, but does not quite extend through the same. The interior otl this bushing is threaded and may 5 is the connecting-plate, which carries the 5o dium ot' the roller 21, carried by the rod 22, 75

be engaged by the fastening-screw 27. When this screw is worked down into the bushing and clamped tightly, the connecting-plate is secured to the supporting-plate 2, and when the screw 27 is withdrawn the parts attached to the connecting-platev'. e., the entire carriage construction-may be lifted bodily and Withdrawn from the machine, At this time it will be noted that the guide-wheels 17 and 18 are perfectly free to pass to the rear of the track 16 and that the rack 4 will be freed from the escapement-wheel 3 by simply lifting'the parts. 28 is a strip, preferably of metal, sccured to the connecting-plate 5 by means of the screw 29. This strip is-slotted near the end opposite to that which is attached to the connecting-plate, so that the screw 27 may be passed partially through it. The screw is, however, provided with ashoulderO, which is of suiiicient size to provide a bearing. `When the screw has been thrust partially through the vstrip 28, it may then be partially drawn out to the end of the slot to the contracted portion, Where it will `be gripped about the annular recess which is formed in the screw immediately below the shoulder 30. It will be noted in Fig. l that the slotted portion in the strip 28 is contracted at 3l, so as to afford a slight resistance to the annular recessed portion of t 1e This insures that the screw will be held securely and will not be lost out when it has been removed from the bushing Q6'. This bushing] prefer to form sepa-rate from the connecting-plate 2, both because this is an economical method of manufacture and because it affords a means for adjustment of the same. 32 is a check-nut which may be provided to more ell'ectivcly hold the bushing in its place in the supporting-plate 2. Vilhcn the strip 28 is used, it will be perceived that Non turning the screw down tightly the strip forms a seat forthe shouldeil 30 of the screw 27 and affords aspringy contact against the top of the connecting-plate 5. To remove the carriage, it is merely necessary to loosen the screws 27 at the two opposite sides of themachine and then lift the carriage construction entirely free. For convenience ol' access l locate the fastening-screws near the outer ends of the connecting-plate, so that the carriage need be moved. buta short distance to one side in order to reach them easily. lf it should be desirable or necessary to further separate the sleeve i) and attai'zhed parts from the guideraii (i, this may be done by simply removing the screws 8 which fasten the bracket? to the cimnecting-plate 5, one or both of the brackets 7 heilig' recessed on the inside to secure. the

corresponding end ofthe' rod 6.

lhe advantages otthe simple construction set toi-th and described herein will be apparent to any onesli'illedjn the artol' tif'pe-writer construction, as well as to the operator.

screw as it is being drawn into place.`

What l claim isl. In a iype-writer the combination with the main back supporting-plate of a continuous connecting-plate resting upon and supported bysaid main back plate, side brackets attached to said connecting-plate, a rear guide-rail carried by said brackets, and a carriage construction adapted to slide longitudinally of said rail, a fastening-screw at'cach end of said connecting-plate having a head accessible from abo\'e,said screw passing downwa rilliv through the back plate for holding said connectingplate against said main back plate.

2. In a type-writer the combination with the main back supporting-plate of a continuous connecting-plate resting upon and supported by said main back plate, side brackets attached to said connecting-plate, a reai' guide-rail removably carried by said brackets, and a carriage construction adapted to slide longitudinally of said rail` a bushing carried bythe said supporting-plate. adjustable therein and extending upward into a recess in said conmeeting-plate and a screw working downward in said bushing for securing said plates together.

3. ln a type-writer the combination with the main backsupporting-plate of a continuous connecting-plate resting upon and supported bysaid main back plate, side brackets attached to said connecting-plate. areal guide-rail carried by said brackets, and a carriage construction adapted to slide longitudinall)v of said rail, a bushing carried bythe said suppoi ting-platik extending upward into a ecess in said connecting-plate for securing said plates together, and a fastening-screw passingdownward into said bushing for securing the said plates together.

4. 1n a typewriter the carriage construction including a main back supporting-plate, a conncctingplate resting thereon, fastening-screws near each end passing downward through said connecting-plate, holding-strips attached to said connecting-plate said fastening'- screws passing through said holdingstrips.

ln a type-writer the carriage construction including a uiain back supportiiig-plate, a connecting-plate resting thereon, fasteningscrews near each end passing downward through said connecting-plate,"springy metallic holding-strips attached to said connectingplate said fastening-screws passing through said holding-strips.

(S. ln a typewriter the carriage construction including a. main back sulmorting-plate, a connecting-plate resting thereon, fasteningscrews near each end passing downward Vthrtnigh said connecting-plate, springy metallic holding-strips attached to said connectingplate said fastening-screws passing through slotted openings in said holding-strips.

'i'. ln a type-writer a carriage construction lOO IIS

includingasupporting-body,acontinuousconnecting'- plate extending across from side to side, a bushing extending upward through a recess in said connecting-plate, a fasteningscrew taking into said bushing and a holdingstrip attached to said connecting-plate for said screw said screw being adapted to clamp v.the connecting-plate against the supporting-body.

8. A type-writer carriage construction' including a supporting-body, a continuous connecting-plate mounted thereon and extending from side to side thereof, brackets carried at either end of the connecting-plate, a guide rail in front thereof, platen-carrying frames adapted to slide longitudinally of said rails, a rod connecting said platen-frames, guide-roll- A ers 'carried by said rod their axes extending forwardly above and below the said stationary rail.

9. A type-writer carriage construction including a supporting-body, a continuous connecting-plate mounted thereon and extending from side to side thereof, brackets carried at either end of the connecting-plate, a guiderail in front thereof, platen-carrying frames adapted to slide longitudinally of said ails, a

rod connecting said platen-frames, gui e-,rollers carried by said rod their axes 'extending forwardly above and below the said stationary rail, and escapcment mechanism including a ratchet projecting upward vthrough a cut-out portion of said connectingplate, a pivoted rack carried by the said platen-carrying frames for engagement with said ratchet.

10. A type-writer carriage construction including a supporting-body, a continuous connecting-plate mounted thereon and extending from side to side thereof, fastening-screws passing downward through said connectingplate, brackets carriedat either end of the connecting-plate, a guide-rai l in front thereof,

platen-carrying frames adapted to slide longitudinally of said rails, a rod connecting said platen-frames, guide-rollers carried by said rod their axes extending forwardly above and below the. said stationary rail.`

11, A type-writer carriage .construction inv cluding a supporting-body, a continuous connecting-plate mounted thereon and extending from side to side thereof, fastening-screws passing downward through said connecting'- plate, bushings carried by said supportingbody extending upward' into recesses in said connecting-plate, brackets carried at either -end of the connecting-plate, a guide-rail in front thereof, platen-carrying frames adapt'- ed to slide longitudinally of said rails, a rod connecting said platen-frames, guide-rollers carried by said rod their axes extending forwadly aboveand below the said stationary rai Y 12. A type-writer carriage construction inv cluding a supporting-body, a continuous connecting-plate mounted thereon and extending from side to side thereof, fastening-screws passing downward through said connectingplate, bushings-carried by said supportingbody extending upward intoV recesses in said connecting-plate, brackets carried at. either end of the connecting-plate, al guide-rail in front thereof, platen-carrying frames adapted to slide longitudinally of said rails, a rod con 

